//Happynewyear 2019/2/6 10:45
#include<bits/stdc++.h>
using namespace std;

int main()
{
    int a,b,s,max=0,i,day=0;
    for (i=1;i<8;i++)  
      {
        cin>>a>>b;
        s=a+b;
        if ((s>max)&&(s>8)) max=s,day=i;
      }
    cout<<day;
    return 0;             
}
